Hi! I have a GM 250 inline six marine engine in my boat. I want to replace it with a 292 that I found in an old Gleaner combine. Will this work if I use the marine carb and distributor from the 250? Will I have to buy a marine cam for the 292, or should I use the one that's in it? Also, do marine engines use specially balanced flywheels, cranks, and harmonic blalncers? Thanks for your help!